ULTRA-GRAPH PRO GEQ3102

2.1Master equalizer in sound reinforcement systems

This is the ULTRA-GRAPH PRO’s probably most common field of application.

Fig. 2.1: The ULTRA-GRAPH PRO as a master equalizer

Please note the following points to achieve optimum results:

Practice has shown that it will be useful to listen to some “unprocessed” music and speech material before you start equalizing your sound reinforcement system. If any distortion can be heard, try to eliminate it within the system. Speaker placement is also of importance. No equalizer can improve a system sound that lacks transparency due to reflections from walls and ceiling. Often, drastic improvements can be achieved by modifying speaker placement and alignment.

If you are using an active multi-way system you should take some run-time and phase correction measures before you work with the ULTRA-GRAPH PRO (the crossover network BEHRINGER SUPER-X PRO CX3400 provides all the necessary tools with its variable split frequencies, phase reverse switches and electronic run- time correction facility). Interference such as mains hum and narrow-band resonance should be eliminated with the ULTRA-GRAPH PRO, before you start doing a sound check.

Once this basic setting has been made, you can continue to fine-tune the system by hand.

Please remember:

A linear response curve is not desirable for all kinds of application. For example, intelligibility is more important in speech applications: here, you should apply a slight roll-off in the bass range, because below the frequency range of voices there are no wanted frequencies but only interference (rumble, etc.).

In general, extremely low and high frequencies are transmitted with much lower amplitudes. There is no sense in “forcing” a small full-range speaker to reproduce frequencies below 50 Hz; apart from a need for higher power reserves, speaker damage will be the most likely result.

+You should always take the physical limits of your system into account, no matter which settings you choose.

Once the system has been adjusted as precisely as possible to produce the desired response curve, you should walk around the room to get an impression of the sound produced in various places. Remember to make regular breaks during these listening tests and to play back various music and speech programs, so that you get a feel for the response characteristics of your system and of the room.

2. APPLICATIONS

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Behringer GEQ3102 manual Master equalizer in sound reinforcement systems, ULTRA-GRAPH PRO as a master equalizer
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GEQ3102 specifications

The Behringer GEQ3102 is a powerful 31-band graphic equalizer known for its exceptional performance and versatility, making it an ideal tool for sound engineers, musicians, and audio enthusiasts alike. Designed to provide precise control over audio frequencies, this graphic equalizer features two separate channels, allowing for comprehensive sound shaping in a variety of settings such as live performances, studio recordings, and installations.

One of the standout features of the GEQ3102 is its 31 bands of equalization. Each band operates at 1/3-octave intervals, spanning a frequency range from 20 Hz to 20 kHz. This extensive range enables users to fine-tune audio signals with remarkable detail. The equalizer provides a 12 dB boost or cut per band, allowing for substantial adjustments in frequency response to tailor the sound to the specific needs of each environment.

In addition to its impressive frequency handling, the GEQ3102 incorporates high-quality components to ensure clean and transparent audio. The use of low-noise op-amps and precision resistors minimizes distortion and colorations, delivering true sound reproduction. The equalizer is built on a robust chassis, capable of enduring the rigors of touring and live sound applications.

Another important characteristic of the GEQ3102 is its performance-enhancing technologies, which include boost/cut faders and a bypass switch. The faders allow users to make quick and intuitive adjustments, while the bypass function enables instant comparison between the equalized and unprocessed audio. This feature is especially useful for evaluating the impact of adjustments and ensuring the desired sound.

Furthermore, the GEQ3102 is designed with flexible connectivity options, including balanced XLR and TRS inputs and outputs. This ensures compatibility with a wide range of audio equipment, enhancing the versatility of the unit. Additionally, the graphic equalizer features LED level indicators for each channel, offering real-time monitoring of the signal level and ensuring optimal performance.

In summary, the Behringer GEQ3102 is an excellent choice for anyone seeking a reliable and effective graphic equalizer. With its extensive 31-band range, high-quality construction, and user-friendly design, it provides the necessary tools to shape sound accurately and effectively, making it a staple in any audio professional's toolkit. Whether for live sound reinforcement or studio applications, the GEQ3102 is sure to deliver exceptional audio performance.
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